Charles w



(Nomaden.) l

' C. W. PRESTON.

1 COMBINATION GAGE. No. 504378.'k Patented Aug. 29, l189s.v

y UNITED STATES PATENT OFFICE.

CHARLES W. PRESTON, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR ONE-HALF TOWILLIAM C. ESPEY AND WALTER E. ANDERSSON, OF

SAME PLACE.

COMBINATIONHGAG.

SPECIFICATION forming part of Letters Patent No. 504,278, dated August29, 1893.

Original application filed April 7, 1892, Serial No. 428,243. Dividedand this application filed November 1, 1892. Serial No. 450,660. (Nomodel.)

To aZZ whom it may concern:

Be it known that I, CHARLES W. PRESTON,

a citizen of the United States, residing at San V plements; Y and I dohereby declare the following to be a full, clear, and exact descriptionof theinvention,such as will enable others skilled in the art to whichit appertains to make and use the same.

This invention refers to an implement or combination tool, consisting ofanumberof elements or mechanical parts adapted for combination andconnection by arrangement and adjustment so as to perform a greatvariety of different functions, such as are required in testing,adjusting and laying out mechanical work of various sorts, the object ofthe invention bein g to provide a simple and convenient device which maybe useful for various purposes, and the invention consists in theconstruction, arrangement and combination of parts, substantially aswill be hereinafter described and claimed.

In another pending application, filed April 7, 1892, Serial No. 428,243,of which application the present one is a division, I have described andclaimed a form of my improved combination implement which is adapted foruse on plain surfaces. The form of the implement included in the presentcase is adapted for use on curved surfaces. This distinction between thetwo forms will be borne in mind in the construction of their variouspeculiarities and details.

In the accompanying drawings illustrating my invention: Figure l is anend elevation, the scale bar being located in a vertical position andthe implement serving as a surface gage employed in marking ordetermining distances with respect to planes or parallel surfaces,horizontal, vertical, or angular. Fig. 2 is a top plan view of the mainstock or head.

Similar letters of reference designate corresponding parts throughoutall the different figures of the drawings.

F denotes a bar of rectangular form, its sides being parallel andstraight and one or more of them being graduated and provided with asuitable scale to enable the bar to be easily adjusted and placed inuse, and it is whenever practicable, set so that its corners will comein contact with the work,.thus giving a clear line of light in setting.This graduated rectangular bar Fis provided at its ends with screw-holesel e to receive the screws Q which are employed in protecting the endsof the scale bar from injury when in use and for various other'purposes. The screw holes e e are adapted to receive lathe points whenso required.

N denotes one of the main stocks, heads or bases' of this form of myimproved combination implement. I employ one or more of these mainstocks N as occasion and circumstances require. The stock N is shown inelevation in Fig. l and in top plan View in Fig. 2. It has a main bodyand two inclined legs. The two legs have the faces A2 and B2 which aredat and are situated preferably at an angle of about ninety degrees toeach other. These legs are adapted to partiallyinclose any cylindricalsurface to which the implement may be applied, as shown in Fig. 1. Themain body of the stock N is provided with a vertical spirit level O andtwo horizontal spirit levels O2 and O3. It is also furnished with ahorizontal slot or mortise E5, and a vertical slot or mortise E4,together with a set-screw P, located and arranged so as to serve toclamp or hold the scale bar F whenever it is inserted into either of themortises E4 or E5.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. In a combination implement, a stock or head provided with'angularfaces which may rest upon cylindrical forms and provided with mortisesorseats for receiving a scale bar parallel to or transversely to the axisof any cylindrical form to which the stock or head may be applied and aclamping means for holding the bar in position and permitting its linealadjustment, substantially in the manner and for the purposes as setforth.

2. In a combination implement, the main stock provided with the angularprojections having faces at right angles to each other and provided alsowith mortises or seats at right angles to each other, in combinationwith the scale bar adapted to be received into and held 5 adj ustablyWithin said mortises, substantially in the manner and for the purposesindicated.

3. In a combination implement, the head N, having the angular faces A2B2 and the mortises or seats E4 and E5, in combination with 1o the scalebar E, substantially as described.

4. The main stock N, having the faces A2 and B2 at right angles to cachother and having also the vertical mortise E4, horizontal mortise E5,clamping screw P and vertical and horizontal levels, all in combinationWith the I5 scale bar, substantially as described.

In testimony whereof I affix my signaturein presence of two Witnesses.

CHARLES W. PRESTON. Witnesses:

ALFRED A. ENQUIsT, WILSON D. BENT, J r.

